This crimp tool can be used to crimp both male and female crimp pins on 18-28 AWG wires to make custom cables. Self-loop lock, more powerful. Ratchet force rod structure. Can be adjusted by adjusting the crimping force of the wheel control handle. Small clamp, feel good . Product Specification: Condiiton: 100% Brand New Color: Blue+Black Material: Ni-Cr Alloy Steel Size: (L) x (W) 190 x 150mm / 7.48" x 5.51" (approx.) How to use: 1.If you are on a roll, do not cut the pins, leave them until the wire is crimped. Prepare the wire by stripping approximately 1/8" (3mm) of insulation from the end Place the wire into the crimp pin, aligning it so the stripped portion is between the inside tabs of the crimp pin, the wire sits between the outer set of tabs. 2.If the crimp pins are too short for this method.see the bottom of these instructions for an alternative.Place the wire and the crimp pin on the appropriate tooth of the die of the tool, ensuring the insulated end is on the higher, wider half of the tooth The tabs should point towards the cavity on the other side of the die so that the tool bends them inward around the wire as it closes. 3.Slowly and completely close the jaws of the tool until they release. The tabs on a crimp pin should form a barrel around the wire conductors and another barrel to relieve tension around r of wire insulation. 4.If the crimp pins are too short for this method (or if they are not on a roll), fully snap the pin on the holding strip. Insert into the appropriate slot of the crimping tool and snap the crimping tool to hold it in place. Package included: 1 X SN-28B crimping tool Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please note that the new type and old type of this product will be sent randomly, and make sure you don't mind before ordering.